20808990720

Names of 20808990720

• Cardinal: 20808990720 can be written as Twenty billion, eight hundred eight million, nine hundred ninety thousand, seven hundred twenty.

Scientific notation

• Scientific notation: 2.080899072 × 10¹⁰

Factors of 20808990720

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 27
• Sum of prime factors: 17

Divisors of 20808990720

• Number of divisors d(n): 630
• Complete list of divisors:
  1 2 3 4 5 6 7 8 9 10 12 14 15 16 18 20 21 24 27 28 30 32 35 36 40 42 45 48 49 54 56 60 63 64 70 72 80 81 84 90 96 98 105 108 112 120 126 128 135 140 144 147 160 162 168 180 189 192 196 210 216 224 240 245 252 256 270 280 288 294 315 320 324 336 360 378 384 392 405 420 432 441 448 480 490 504 512 540 560 567 576 588 630 640 648 672 720 735 756 768 784 810 840 864 882 896 945 960 980 1008 1024 1080 1120 1134 1152 1176 1260 1280 1296 1323 1344 1440 1470 1512 1536 1568 1620 1680 1728 1764 1792 1890 1920 1960 2016 2048 2160 2205 2240 2268 2304 2352 2520 2560 2592 2646 2688 2835 2880 2940 3024 3072 3136 3240 3360 3456 3528 3584 3780 3840 3920 3969 4032 4096 4320 4410 4480 4536 4608 4704 5040 5120 5184 5292 5376 5670 5760 5880 6048 6144 6272 6480 6615 6720 6912 7056 7168 7560 7680 7840 7938 8064 8192 8640 8820 8960 9072 9216 9408 10080 10240 10368 10584 10752 11340 11520 11760 12096 12288 12544 12960 13230 13440 13824 14112 14336 15120 15360 15680 15876 16128 16384 17280 17640 17920 18144 18432 18816 19845 20160 20480 20736 21168 21504 22680 23040 23520 24192 24576 25088 25920 26460 26880 27648 28224 28672 30240 30720 31360 31752 32256 32768 34560 35280 35840 36288 36864 37632 39690 40320 40960 41472 42336 43008 45360 46080 47040 48384 49152 50176 51840 52920 53760 55296 56448 57344 60480 61440 62720 63504 64512 65536 69120 70560 71680 72576 73728 75264 79380 80640 81920 82944 84672 86016 90720 92160 94080 96768 98304 100352 103680 105840 107520 110592 112896 114688 120960 122880 125440 127008 129024 131072 138240 141120 143360 145152 147456 150528 158760 161280 163840 165888 169344 172032 181440 184320 188160 193536 196608 200704 207360 211680 215040 221184 225792 229376 241920 245760 250880 254016 258048 262144 276480 282240 286720 290304 294912 301056 317520 322560 327680 331776 338688 344064 362880 368640 376320 387072 393216 401408 414720 423360 430080 442368 451584 458752 483840 491520 501760 508032 516096 524288 552960 564480 573440 580608 589824 602112 635040 645120 655360 663552 677376 688128 725760 737280 752640 774144 786432 802816 829440 846720 860160 884736 903168 917504 967680 983040 1003520 1016064 1032192 1048576 1105920 1128960 1146880 1161216 1179648 1204224 1270080 1290240 1310720 1327104 1354752 1376256 1451520 1474560 1505280 1548288 1572864 1605632 1658880 1693440 1720320 1769472 1806336 1835008 1935360 1966080 2007040 2032128 2064384 2211840 2257920 2293760 2322432 2359296 2408448 2540160 2580480 2621440 2654208 2709504 2752512 2903040 2949120 3010560 3096576 3145728 3211264 3317760 3386880 3440640 3538944 3612672 3670016 3870720 3932160 4014080 4064256 4128768 4423680 4515840 4587520 4644864 4718592 4816896 5080320 5160960 5242880 5308416 5419008 5505024 5806080 5898240 6021120 6193152 6422528 6635520 6773760 6881280 7077888 7225344 7340032 7741440 7864320 8028160 8128512 8257536 8847360 9031680 9175040 9289728 9437184 9633792 10160640 10321920 10616832 10838016 11010048 11612160 11796480 12042240 12386304 12845056 13271040 13547520 13762560 14155776 14450688 15482880 15728640 16056320 16257024 16515072 17694720 18063360 18350080 18579456 19267584 20321280 20643840 21233664 21676032 22020096 23224320 23592960 24084480 24772608 25690112 26542080 27095040 27525120 28311552 28901376 30965760 32112640 32514048 33030144 35389440 36126720 36700160 37158912 38535168 40642560 41287680 42467328 43352064 46448640 47185920 48168960 49545216 51380224 53084160 54190080 55050240 57802752 61931520 64225280 65028096 66060288 70778880 72253440 74317824 77070336 81285120 82575360 84934656 86704128 92897280 96337920 99090432 106168320 108380160 110100480 115605504 123863040 128450560 130056192 141557760 144506880 148635648 154140672 162570240 165150720 173408256 185794560 192675840 198180864 212336640 216760320 231211008 247726080 256901120 260112384 289013760 297271296 325140480 330301440 346816512 371589120 385351680 424673280 433520640 462422016 495452160 520224768 578027520 594542592 650280960 693633024 743178240 770703360 867041280 990904320 1040449536 1156055040 1300561920 1387266048 1486356480 1734082560 2080899072 2312110080 2601123840 2972712960 3468165120 4161798144 5202247680 6936330240 10404495360 20808990720
• Sum of all divisors σ(n): 86784302682
• Sum of proper divisors (its aliquot sum) s(n): 65975311962
• 20808990720 is an abundant number, because the sum of its proper divisors (65975311962) is greater than itself. Its abundance is 45166321242

Bases of 20808990720

• Binary: 10011011000010100000000000000000000₂
• Hexadecimal: 0x4D8500000
• Base-36: 9K54W00

Squares and roots of 20808990720

• 20808990720 squared (20808990720²) is 433014094785046118400
• 20808990720 cubed (20808990720³) is 9010586280011225072557621248000
• The square root of 20808990720 is 144253.2173644665
• The cube root of 20808990720 is 2750.5339225561

Scales and comparisons

• 20,808,990,720 seconds is equal to 661 years, 34 weeks, 2 days, 19 hours, 12 minutes.
• To count from 1 to 20,808,990,720 would take you about one thousand, three hundred twenty-three years!

  This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)

• A cube with a volume of 20808990720 cubic inches would be around 229.2 feet tall.

Recreational maths with 20808990720

• 20808990720 backwards is 02709980802
• 20808990720 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 20808990720's digits is 45
• More coming soon!